PLEASE HELP!! - A few questions re: header

  1. Here is how to change color https://colorlibsupport.com/t/how-to-change-travelify-theme-color/

  2. Header can be resized like this. Add this code to Theme Options - Other - Custom CSS and tweak size accordingly.

#site-logo {
    margin-top: 0;
}
.hgroup-wrap.clearfix {
    padding-top: 0;
    padding-bottom: 0;
}
.hgroup-right {
    margin-top: 15px;
}
  1. Featured slider block can be hidden entirely or just title or excerpt itself. Here is how to hide it entirely
.featured-text {
    display: none;
}
  1. Yes, you can display the entire post. You should use the right Blog Template (example https://colorlib.com/travelify/blog-full-content/) Please read theme documentation for more information: Travelify Theme Instructions - Colorlib